90591495 has 16 divisors (see below), whose sum is σ = 145064832. Its totient is φ = 48276000.

The previous prime is 90591493. The next prime is 90591499. The reversal of 90591495 is 59419509.

It is a happy number.

It is not a de Polignac number, because 90591495 - 2¹ = 90591493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90591493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32424 + ... + 35106.

It is an arithmetic number, because the mean of its divisors is an integer number (9066552).

Almost surely, 2^90591495 is an apocalyptic number.

90591495 is a deficient number, since it is larger than the sum of its proper divisors (54473337).

90591495 is a wasteful number, since it uses less digits than its factorization.

90591495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4942.

The product of its (nonzero) digits is 72900, while the sum is 42.

The square root of 90591495 is about 9517.9564508354. The cubic root of 90591495 is about 449.1200830264.

The spelling of 90591495 in words is "ninety million, five hundred ninety-one thousand, four hundred ninety-five".